Harlech Castle is one of the great castles Edward I built to enforce his rule over the Welsh. Situated high upon a rocky outcrop, its seaward side was defended by sheer cliffs, while a deep moat protected the other sides. It was designed by Master James of St George, who personally supervised its construction, ensuring that the vast fortress was completed in just seven years (1283-1290). The castle is built to a concentric design with an impressive inner curtain wall with huge round towers on the corners, surrounded by an outer perimeter of much lower walls. The inner walls contained domestic buildings, including a great hall, and the more vulnerable east side of the castle was strengthened by a massive gatehouse that contained comfortable residential quarters.
This material came from castlexplorer.co.uk